Add feature flag for universal calls to start|finishOperationBatch (#49908)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49908

There are various batching mechanisms across react-native platforms. The NativeAnimated startOperationBatch and finishOperationBatch methods are a useful way to signal that complete animation graphs are established for atomic flushes to the UI thread.

Setting up this feature flag for use across non-Android React Native platforms.

## Changelog

[Internal]

Reviewed By: javache

Differential Revision: D70827938

fbshipit-source-id: 4c4a74e9a11f75090152637d6195092f5af866a0

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<e5e17b9d0c91c979f09cbdc0314f4cf2>>
+ * @generated SignedSource<<df008a78acc9b0104c54e06849d5e9b9>>
  */
 
 /**
@@ -34,6 +34,12 @@ public object ReactNativeFeatureFlags {
   @JvmStatic
   public fun commonTestFlag(): Boolean = accessor.commonTestFlag()
 
+  /**
+   * Enables start- and finishOperationBatch on any platform.
+   */
+  @JvmStatic
+  public fun animatedShouldSignalBatch(): Boolean = accessor.animatedShouldSignalBatch()
+
   /**
    * Prevent FabricMountingManager from reordering mountitems, which may lead to invalid state on the UI thread
    */

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<e567bf1ac6ec5d0381deed1245b22a3f>>
+ * @generated SignedSource<<9813fd15c7f54d69d3de6084f733c3a6>>
  */
 
 /**
@@ -21,6 +21,7 @@ package com.facebook.react.internal.featureflags
 
 internal class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAccessor {
   private var commonTestFlagCache: Boolean? = null
+  private var animatedShouldSignalBatchCache: Boolean? = null
   private var disableMountItemReorderingAndroidCache: Boolean? = null
   private var enableAccumulatedUpdatesInRawPropsAndroidCache: Boolean? = null
   private var enableBridgelessArchitectureCache: Boolean? = null
@@ -71,6 +72,15 @@ internal class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAcces
     return cached
   }
 
+  override fun animatedShouldSignalBatch(): Boolean {
+    var cached = animatedShouldSignalBatchCache
+    if (cached == null) {
+      cached = ReactNativeFeatureFlagsCxxInterop.animatedShouldSignalBatch()
+      animatedShouldSignalBatchCache = cached
+    }
+    return cached
+  }
+
   override fun disableMountItemReorderingAndroid(): Boolean {
     var cached = disableMountItemReorderingAndroidCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxInterop.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<1e7421f38e1dd6629e42492b2c7a4ee1>>
+ * @generated SignedSource<<06c5ef75b624d953e7a8d9297feaf816>>
  */
 
 /**
@@ -30,6 +30,8 @@ public object ReactNativeFeatureFlagsCxxInterop {
 
   @DoNotStrip @JvmStatic public external fun commonTestFlag(): Boolean
 
+  @DoNotStrip @JvmStatic public external fun animatedShouldSignalBatch(): Boolean
+
   @DoNotStrip @JvmStatic public external fun disableMountItemReorderingAndroid(): Boolean
 
   @DoNotStrip @JvmStatic public external fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<0f22538afea52085aaf605e8608eaff8>>
+ * @generated SignedSource<<cbe1d77424b561149b0bda39955dffac>>
  */
 
 /**
@@ -25,6 +25,8 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun commonTestFlag(): Boolean = false
 
+  override fun animatedShouldSignalBatch(): Boolean = false
+
   override fun disableMountItemReorderingAndroid(): Boolean = false
 
   override fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean = false

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsLocalAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<1693dced312625bbfedce5f2dfa9816c>>
+ * @generated SignedSource<<0fb76e329360157ea9772a0d8bebc873>>
  */
 
 /**
@@ -25,6 +25,7 @@ internal class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcc
   private val accessedFeatureFlags = mutableSetOf<String>()
 
   private var commonTestFlagCache: Boolean? = null
+  private var animatedShouldSignalBatchCache: Boolean? = null
   private var disableMountItemReorderingAndroidCache: Boolean? = null
   private var enableAccumulatedUpdatesInRawPropsAndroidCache: Boolean? = null
   private var enableBridgelessArchitectureCache: Boolean? = null
@@ -76,6 +77,16 @@ internal class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcc
     return cached
   }
 
+  override fun animatedShouldSignalBatch(): Boolean {
+    var cached = animatedShouldSignalBatchCache
+    if (cached == null) {
+      cached = currentProvider.animatedShouldSignalBatch()
+      accessedFeatureFlags.add("animatedShouldSignalBatch")
+      animatedShouldSignalBatchCache = cached
+    }
+    return cached
+  }
+
   override fun disableMountItemReorderingAndroid(): Boolean {
     var cached = disableMountItemReorderingAndroidCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsProvider.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<2f2bbf0a92c3af728de6ea38dc374b94>>
+ * @generated SignedSource<<0c16f7af743a6c4d7aaabf010c1c7327>>
  */
 
 /**
@@ -25,6 +25,8 @@ import com.facebook.proguard.annotations.DoNotStrip
 public interface ReactNativeFeatureFlagsProvider {
   @DoNotStrip public fun commonTestFlag(): Boolean
 
+  @DoNotStrip public fun animatedShouldSignalBatch(): Boolean
+
   @DoNotStrip public fun disableMountItemReorderingAndroid(): Boolean
 
   @DoNotStrip public fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<14c3186a1395a23befb73fc9da972de7>>
+ * @generated SignedSource<<c866e69278d249dd79cb2fc193d1a7e2>>
  */
 
 /**
@@ -45,6 +45,12 @@ class ReactNativeFeatureFlagsProviderHolder
     return method(javaProvider_);
   }
 
+  bool animatedShouldSignalBatch() override {
+    static const auto method =
+        getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("animatedShouldSignalBatch");
+    return method(javaProvider_);
+  }
+
   bool disableMountItemReorderingAndroid() override {
     static const auto method =
         getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("disableMountItemReorderingAndroid");
@@ -294,6 +300,11 @@ bool JReactNativeFeatureFlagsCxxInterop::commonTestFlag(
   return ReactNativeFeatureFlags::commonTestFlag();
 }
 
+bool JReactNativeFeatureFlagsCxxInterop::animatedShouldSignalBatch(
+    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
+  return ReactNativeFeatureFlags::animatedShouldSignalBatch();
+}
+
 bool JReactNativeFeatureFlagsCxxInterop::disableMountItemReorderingAndroid(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
   return ReactNativeFeatureFlags::disableMountItemReorderingAndroid();
@@ -528,6 +539,9 @@ void JReactNativeFeatureFlagsCxxInterop::registerNatives() {
       makeNativeMethod(
         "commonTestFlag",
         JReactNativeFeatureFlagsCxxInterop::commonTestFlag),
+      makeNativeMethod(
+        "animatedShouldSignalBatch",
+        JReactNativeFeatureFlagsCxxInterop::animatedShouldSignalBatch),
       makeNativeMethod(
         "disableMountItemReorderingAndroid",
         JReactNativeFeatureFlagsCxxInterop::disableMountItemReorderingAndroid),

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<5edcb3baccc7a27525ba6ca43b2aab8a>>
+ * @generated SignedSource<<ee83dc14463351d400cd75624c803176>>
  */
 
 /**
@@ -33,6 +33,9 @@ class JReactNativeFeatureFlagsCxxInterop
   static bool commonTestFlag(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 
+  static bool animatedShouldSignalBatch(
+    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
+
   static bool disableMountItemReorderingAndroid(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<98c62bb40ef9c03af6e3e2d758cef7ec>>
+ * @generated SignedSource<<4d47f61435ba3a74e84752a02def81c2>>
  */
 
 /**
@@ -30,6 +30,10 @@ bool ReactNativeFeatureFlags::commonTestFlag() {
   return getAccessor().commonTestFlag();
 }
 
+bool ReactNativeFeatureFlags::animatedShouldSignalBatch() {
+  return getAccessor().animatedShouldSignalBatch();
+}
+
 bool ReactNativeFeatureFlags::disableMountItemReorderingAndroid() {
   return getAccessor().disableMountItemReorderingAndroid();
 }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<452dc78526d49a23c5052bd1ecd130d2>>
+ * @generated SignedSource<<29cdbefbe02064df4fb65388e64f95a4>>
  */
 
 /**
@@ -44,6 +44,11 @@ class ReactNativeFeatureFlags {
    */
   RN_EXPORT static bool commonTestFlag();
 
+  /**
+   * Enables start- and finishOperationBatch on any platform.
+   */
+  RN_EXPORT static bool animatedShouldSignalBatch();
+
   /**
    * Prevent FabricMountingManager from reordering mountitems, which may lead to invalid state on the UI thread
    */

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsAccessor.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<dd3a65bc7f16b0d774237c21c21d048a>>
+ * @generated SignedSource<<353677101629176192534f1f234e2de4>>
  */
 
 /**
@@ -47,6 +47,24 @@ bool ReactNativeFeatureFlagsAccessor::commonTestFlag() {
   return flagValue.value();
 }
 
+bool ReactNativeFeatureFlagsAccessor::animatedShouldSignalBatch() {
+  auto flagValue = animatedShouldSignalBatch_.load();
+
+  if (!flagValue.has_value()) {
+    // This block is not exclusive but it is not necessary.
+    // If multiple threads try to initialize the feature flag, we would only
+    // be accessing the provider multiple times but the end state of this
+    // instance and the returned flag value would be the same.
+
+    markFlagAsAccessed(1, "animatedShouldSignalBatch");
+
+    flagValue = currentProvider_->animatedShouldSignalBatch();
+    animatedShouldSignalBatch_ = flagValue;
+  }
+
+  return flagValue.value();
+}
+
 bool ReactNativeFeatureFlagsAccessor::disableMountItemReorderingAndroid() {
   auto flagValue = disableMountItemReorderingAndroid_.load();
 
@@ -56,7 +74,7 @@ bool ReactNativeFeatureFlagsAccessor::disableMountItemReorderingAndroid() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(1, "disableMountItemReorderingAndroid");
+    markFlagAsAccessed(2, "disableMountItemReorderingAndroid");
 
     flagValue = currentProvider_->disableMountItemReorderingAndroid();
     disableMountItemReorderingAndroid_ = flagValue;
@@ -74,7 +92,7 @@ bool ReactNativeFeatureFlagsAccessor::enableAccumulatedUpdatesInRawPropsAndroid(
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(2, "enableAccumulatedUpdatesInRawPropsAndroid");
+    markFlagAsAccessed(3, "enableAccumulatedUpdatesInRawPropsAndroid");
 
     flagValue = currentProvider_->enableAccumulatedUpdatesInRawPropsAndroid();
     enableAccumulatedUpdatesInRawPropsAndroid_ = flagValue;
@@ -92,7 +110,7 @@ bool ReactNativeFeatureFlagsAccessor::enableBridgelessArchitecture() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(3, "enableBridgelessArchitecture");
+    markFlagAsAccessed(4, "enableBridgelessArchitecture");
 
     flagValue = currentProvider_->enableBridgelessArchitecture();
     enableBridgelessArchitecture_ = flagValue;
@@ -110,7 +128,7 @@ bool ReactNativeFeatureFlagsAccessor::enableCppPropsIteratorSetter() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(4, "enableCppPropsIteratorSetter");
+    markFlagAsAccessed(5, "enableCppPropsIteratorSetter");
 
     flagValue = currentProvider_->enableCppPropsIteratorSetter();
     enableCppPropsIteratorSetter_ = flagValue;
@@ -128,7 +146,7 @@ bool ReactNativeFeatureFlagsAccessor::enableEagerRootViewAttachment() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(5, "enableEagerRootViewAttachment");
+    markFlagAsAccessed(6, "enableEagerRootViewAttachment");
 
     flagValue = currentProvider_->enableEagerRootViewAttachment();
     enableEagerRootViewAttachment_ = flagValue;
@@ -146,7 +164,7 @@ bool ReactNativeFeatureFlagsAccessor::enableFabricLogs() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(6, "enableFabricLogs");
+    markFlagAsAccessed(7, "enableFabricLogs");
 
     flagValue = currentProvider_->enableFabricLogs();
     enableFabricLogs_ = flagValue;
@@ -164,7 +182,7 @@ bool ReactNativeFeatureFlagsAccessor::enableFabricRenderer() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(7, "enableFabricRenderer");
+    markFlagAsAccessed(8, "enableFabricRenderer");
 
     flagValue = currentProvider_->enableFabricRenderer();
     enableFabricRenderer_ = flagValue;
@@ -182,7 +200,7 @@ bool ReactNativeFeatureFlagsAccessor::enableIOSViewClipToPaddingBox() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(8, "enableIOSViewClipToPaddingBox");
+    markFlagAsAccessed(9, "enableIOSViewClipToPaddingBox");
 
     flagValue = currentProvider_->enableIOSViewClipToPaddingBox();
     enableIOSViewClipToPaddingBox_ = flagValue;
@@ -200,7 +218,7 @@ bool ReactNativeFeatureFlagsAccessor::enableImagePrefetchingAndroid() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(9, "enableImagePrefetchingAndroid");
+    markFlagAsAccessed(10, "enableImagePrefetchingAndroid");
 
     flagValue = currentProvider_->enableImagePrefetchingAndroid();
     enableImagePrefetchingAndroid_ = flagValue;
@@ -218,7 +236,7 @@ bool ReactNativeFeatureFlagsAccessor::enableJSRuntimeGCOnMemoryPressureOnIOS() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(10, "enableJSRuntimeGCOnMemoryPressureOnIOS");
+    markFlagAsAccessed(11, "enableJSRuntimeGCOnMemoryPressureOnIOS");
 
     flagValue = currentProvider_->enableJSRuntimeGCOnMemoryPressureOnIOS();
     enableJSRuntimeGCOnMemoryPressureOnIOS_ = flagValue;
@@ -236,7 +254,7 @@ bool ReactNativeFeatureFlagsAccessor::enableLayoutAnimationsOnAndroid() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(11, "enableLayoutAnimationsOnAndroid");
+    markFlagAsAccessed(12, "enableLayoutAnimationsOnAndroid");
 
     flagValue = currentProvider_->enableLayoutAnimationsOnAndroid();
     enableLayoutAnimationsOnAndroid_ = flagValue;
@@ -254,7 +272,7 @@ bool ReactNativeFeatureFlagsAccessor::enableLayoutAnimationsOnIOS() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(12, "enableLayoutAnimationsOnIOS");
+    markFlagAsAccessed(13, "enableLayoutAnimationsOnIOS");
 
     flagValue = currentProvider_->enableLayoutAnimationsOnIOS();
     enableLayoutAnimationsOnIOS_ = flagValue;
@@ -272,7 +290,7 @@ bool ReactNativeFeatureFlagsAccessor::enableLongTaskAPI() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(13, "enableLongTaskAPI");
+    markFlagAsAccessed(14, "enableLongTaskAPI");
 
     flagValue = currentProvider_->enableLongTaskAPI();
     enableLongTaskAPI_ = flagValue;
@@ -290,7 +308,7 @@ bool ReactNativeFeatureFlagsAccessor::enableNativeCSSParsing() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(14, "enableNativeCSSParsing");
+    markFlagAsAccessed(15, "enableNativeCSSParsing");
 
     flagValue = currentProvider_->enableNativeCSSParsing();
     enableNativeCSSParsing_ = flagValue;
@@ -308,7 +326,7 @@ bool ReactNativeFeatureFlagsAccessor::enableNewBackgroundAndBorderDrawables() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(15, "enableNewBackgroundAndBorderDrawables");
+    markFlagAsAccessed(16, "enableNewBackgroundAndBorderDrawables");
 
     flagValue = currentProvider_->enableNewBackgroundAndBorderDrawables();
     enableNewBackgroundAndBorderDrawables_ = flagValue;
@@ -326,7 +344,7 @@ bool ReactNativeFeatureFlagsAccessor::enablePropsUpdateReconciliationAndroid() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(16, "enablePropsUpdateReconciliationAndroid");
+    markFlagAsAccessed(17, "enablePropsUpdateReconciliationAndroid");
 
     flagValue = currentProvider_->enablePropsUpdateReconciliationAndroid();
     enablePropsUpdateReconciliationAndroid_ = flagValue;
@@ -344,7 +362,7 @@ bool ReactNativeFeatureFlagsAccessor::enableReportEventPaintTime() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(17, "enableReportEventPaintTime");
+    markFlagAsAccessed(18, "enableReportEventPaintTime");
 
     flagValue = currentProvider_->enableReportEventPaintTime();
     enableReportEventPaintTime_ = flagValue;
@@ -362,7 +380,7 @@ bool ReactNativeFeatureFlagsAccessor::enableSynchronousStateUpdates() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(18, "enableSynchronousStateUpdates");
+    markFlagAsAccessed(19, "enableSynchronousStateUpdates");
 
     flagValue = currentProvider_->enableSynchronousStateUpdates();
     enableSynchronousStateUpdates_ = flagValue;
@@ -380,7 +398,7 @@ bool ReactNativeFeatureFlagsAccessor::enableUIConsistency() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(19, "enableUIConsistency");
+    markFlagAsAccessed(20, "enableUIConsistency");
 
     flagValue = currentProvider_->enableUIConsistency();
     enableUIConsistency_ = flagValue;
@@ -398,7 +416,7 @@ bool ReactNativeFeatureFlagsAccessor::enableViewCulling() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(20, "enableViewCulling");
+    markFlagAsAccessed(21, "enableViewCulling");
 
     flagValue = currentProvider_->enableViewCulling();
     enableViewCulling_ = flagValue;
@@ -416,7 +434,7 @@ bool ReactNativeFeatureFlagsAccessor::enableViewRecycling() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(21, "enableViewRecycling");
+    markFlagAsAccessed(22, "enableViewRecycling");
 
     flagValue = currentProvider_->enableViewRecycling();
     enableViewRecycling_ = flagValue;
@@ -434,7 +452,7 @@ bool ReactNativeFeatureFlagsAccessor::enableViewRecyclingForText() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(22, "enableViewRecyclingForText");
+    markFlagAsAccessed(23, "enableViewRecyclingForText");
 
     flagValue = currentProvider_->enableViewRecyclingForText();
     enableViewRecyclingForText_ = flagValue;
@@ -452,7 +470,7 @@ bool ReactNativeFeatureFlagsAccessor::enableViewRecyclingForView() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(23, "enableViewRecyclingForView");
+    markFlagAsAccessed(24, "enableViewRecyclingForView");
 
     flagValue = currentProvider_->enableViewRecyclingForView();
     enableViewRecyclingForView_ = flagValue;
@@ -470,7 +488,7 @@ bool ReactNativeFeatureFlagsAccessor::fixDifferentiatorEmittingUpdatesWithWrongP
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(24, "fixDifferentiatorEmittingUpdatesWithWrongParentTag");
+    markFlagAsAccessed(25, "fixDifferentiatorEmittingUpdatesWithWrongParentTag");
 
     flagValue = currentProvider_->fixDifferentiatorEmittingUpdatesWithWrongParentTag();
     fixDifferentiatorEmittingUpdatesWithWrongParentTag_ = flagValue;
@@ -488,7 +506,7 @@ bool ReactNativeFeatureFlagsAccessor::fixMappingOfEventPrioritiesBetweenFabricAn
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(25, "fixMappingOfEventPrioritiesBetweenFabricAndReact");
+    markFlagAsAccessed(26, "fixMappingOfEventPrioritiesBetweenFabricAndReact");
 
     flagValue = currentProvider_->fixMappingOfEventPrioritiesBetweenFabricAndReact();
     fixMappingOfEventPrioritiesBetweenFabricAndReact_ = flagValue;
@@ -506,7 +524,7 @@ bool ReactNativeFeatureFlagsAccessor::fixMountingCoordinatorReportedPendingTrans
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(26, "fixMountingCoordinatorReportedPendingTransactionsOnAndroid");
+    markFlagAsAccessed(27, "fixMountingCoordinatorReportedPendingTransactionsOnAndroid");
 
     flagValue = currentProvider_->fixMountingCoordinatorReportedPendingTransactionsOnAndroid();
     fixMountingCoordinatorReportedPendingTransactionsOnAndroid_ = flagValue;
@@ -524,7 +542,7 @@ bool ReactNativeFeatureFlagsAccessor::fuseboxEnabledRelease() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(27, "fuseboxEnabledRelease");
+    markFlagAsAccessed(28, "fuseboxEnabledRelease");
 
     flagValue = currentProvider_->fuseboxEnabledRelease();
     fuseboxEnabledRelease_ = flagValue;
@@ -542,7 +560,7 @@ bool ReactNativeFeatureFlagsAccessor::fuseboxNetworkInspectionEnabled() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(28, "fuseboxNetworkInspectionEnabled");
+    markFlagAsAccessed(29, "fuseboxNetworkInspectionEnabled");
 
     flagValue = currentProvider_->fuseboxNetworkInspectionEnabled();
     fuseboxNetworkInspectionEnabled_ = flagValue;
@@ -560,7 +578,7 @@ bool ReactNativeFeatureFlagsAccessor::lazyAnimationCallbacks() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(29, "lazyAnimationCallbacks");
+    markFlagAsAccessed(30, "lazyAnimationCallbacks");
 
     flagValue = currentProvider_->lazyAnimationCallbacks();
     lazyAnimationCallbacks_ = flagValue;
@@ -578,7 +596,7 @@ bool ReactNativeFeatureFlagsAccessor::removeTurboModuleManagerDelegateMutex() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(30, "removeTurboModuleManagerDelegateMutex");
+    markFlagAsAccessed(31, "removeTurboModuleManagerDelegateMutex");
 
     flagValue = currentProvider_->removeTurboModuleManagerDelegateMutex();
     removeTurboModuleManagerDelegateMutex_ = flagValue;
@@ -596,7 +614,7 @@ bool ReactNativeFeatureFlagsAccessor::throwExceptionInsteadOfDeadlockOnTurboModu
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(31, "throwExceptionInsteadOfDeadlockOnTurboModuleSetupDuringSyncRenderIOS");
+    markFlagAsAccessed(32, "throwExceptionInsteadOfDeadlockOnTurboModuleSetupDuringSyncRenderIOS");
 
     flagValue = currentProvider_->throwExceptionInsteadOfDeadlockOnTurboModuleSetupDuringSyncRenderIOS();
     throwExceptionInsteadOfDeadlockOnTurboModuleSetupDuringSyncRenderIOS_ = flagValue;
@@ -614,7 +632,7 @@ bool ReactNativeFeatureFlagsAccessor::traceTurboModulePromiseRejectionsOnAndroid
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(32, "traceTurboModulePromiseRejectionsOnAndroid");
+    markFlagAsAccessed(33, "traceTurboModulePromiseRejectionsOnAndroid");
 
     flagValue = currentProvider_->traceTurboModulePromiseRejectionsOnAndroid();
     traceTurboModulePromiseRejectionsOnAndroid_ = flagValue;
@@ -632,7 +650,7 @@ bool ReactNativeFeatureFlagsAccessor::useAlwaysAvailableJSErrorHandling() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(33, "useAlwaysAvailableJSErrorHandling");
+    markFlagAsAccessed(34, "useAlwaysAvailableJSErrorHandling");
 
     flagValue = currentProvider_->useAlwaysAvailableJSErrorHandling();
     useAlwaysAvailableJSErrorHandling_ = flagValue;
@@ -650,7 +668,7 @@ bool ReactNativeFeatureFlagsAccessor::useEditTextStockAndroidFocusBehavior() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(34, "useEditTextStockAndroidFocusBehavior");
+    markFlagAsAccessed(35, "useEditTextStockAndroidFocusBehavior");
 
     flagValue = currentProvider_->useEditTextStockAndroidFocusBehavior();
     useEditTextStockAndroidFocusBehavior_ = flagValue;
@@ -668,7 +686,7 @@ bool ReactNativeFeatureFlagsAccessor::useFabricInterop() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(35, "useFabricInterop");
+    markFlagAsAccessed(36, "useFabricInterop");
 
     flagValue = currentProvider_->useFabricInterop();
     useFabricInterop_ = flagValue;
@@ -686,7 +704,7 @@ bool ReactNativeFeatureFlagsAccessor::useNativeViewConfigsInBridgelessMode() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(36, "useNativeViewConfigsInBridgelessMode");
+    markFlagAsAccessed(37, "useNativeViewConfigsInBridgelessMode");
 
     flagValue = currentProvider_->useNativeViewConfigsInBridgelessMode();
     useNativeViewConfigsInBridgelessMode_ = flagValue;
@@ -704,7 +722,7 @@ bool ReactNativeFeatureFlagsAccessor::useOptimizedEventBatchingOnAndroid() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(37, "useOptimizedEventBatchingOnAndroid");
+    markFlagAsAccessed(38, "useOptimizedEventBatchingOnAndroid");
 
     flagValue = currentProvider_->useOptimizedEventBatchingOnAndroid();
     useOptimizedEventBatchingOnAndroid_ = flagValue;
@@ -722,7 +740,7 @@ bool ReactNativeFeatureFlagsAccessor::useRawPropsJsiValue() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(38, "useRawPropsJsiValue");
+    markFlagAsAccessed(39, "useRawPropsJsiValue");
 
     flagValue = currentProvider_->useRawPropsJsiValue();
     useRawPropsJsiValue_ = flagValue;
@@ -740,7 +758,7 @@ bool ReactNativeFeatureFlagsAccessor::useTurboModuleInterop() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(39, "useTurboModuleInterop");
+    markFlagAsAccessed(40, "useTurboModuleInterop");
 
     flagValue = currentProvider_->useTurboModuleInterop();
     useTurboModuleInterop_ = flagValue;
@@ -758,7 +776,7 @@ bool ReactNativeFeatureFlagsAccessor::useTurboModules() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(40, "useTurboModules");
+    markFlagAsAccessed(41, "useTurboModules");
 
     flagValue = currentProvider_->useTurboModules();
     useTurboModules_ = flagValue;

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsAccessor.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<c526b54707d066c3883f5209b597ec83>>
+ * @generated SignedSource<<00f623d5f3920895eb2c1b530dce6a7d>>
  */
 
 /**
@@ -33,6 +33,7 @@ class ReactNativeFeatureFlagsAccessor {
   ReactNativeFeatureFlagsAccessor();
 
   bool commonTestFlag();
+  bool animatedShouldSignalBatch();
   bool disableMountItemReorderingAndroid();
   bool enableAccumulatedUpdatesInRawPropsAndroid();
   bool enableBridgelessArchitecture();
@@ -84,9 +85,10 @@ class ReactNativeFeatureFlagsAccessor {
   std::unique_ptr<ReactNativeFeatureFlagsProvider> currentProvider_;
   bool wasOverridden_;
 
-  std::array<std::atomic<const char*>, 41> accessedFeatureFlags_;
+  std::array<std::atomic<const char*>, 42> accessedFeatureFlags_;
 
   std::atomic<std::optional<bool>> commonTestFlag_;
+  std::atomic<std::optional<bool>> animatedShouldSignalBatch_;
   std::atomic<std::optional<bool>> disableMountItemReorderingAndroid_;
   std::atomic<std::optional<bool>> enableAccumulatedUpdatesInRawPropsAndroid_;
   std::atomic<std::optional<bool>> enableBridgelessArchitecture_;

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDefaults.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<132471a831b3041cc6cae8915de33982>>
+ * @generated SignedSource<<140e6580100dab5806194e780610f122>>
  */
 
 /**
@@ -31,6 +31,10 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
     return false;
   }
 
+  bool animatedShouldSignalBatch() override {
+    return false;
+  }
+
   bool disableMountItemReorderingAndroid() override {
     return false;
   }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDynamicProvider.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<b4b4f1a34fa94b88dae41b0f14c96cc8>>
+ * @generated SignedSource<<b8be2ef692b468cdfee6d88c091abec3>>
  */
 
 /**
@@ -54,6 +54,15 @@ class ReactNativeFeatureFlagsDynamicProvider : public ReactNativeFeatureFlagsDef
     return ReactNativeFeatureFlagsDefaults::commonTestFlag();
   }
 
+  bool animatedShouldSignalBatch() override {
+    auto value = values_["animatedShouldSignalBatch"];
+    if (!value.isNull()) {
+      return value.getBool();
+    }
+
+    return ReactNativeFeatureFlagsDefaults::animatedShouldSignalBatch();
+  }
+
   bool disableMountItemReorderingAndroid() override {
     auto value = values_["disableMountItemReorderingAndroid"];
     if (!value.isNull()) {

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsOverridesOSSCanary.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<7bd8ef01ed492807df85a3d4a7f6a55c>>
+ * @generated SignedSource<<f694a97b02b01d4b56b5eac7f2a348e5>>
  */
 
 /**
@@ -33,6 +33,8 @@ class ReactNativeFeatureFlagsOverridesOSSCanary : public ReactNativeFeatureFlags
 
 
 
+
+
   bool enableBridgelessArchitecture() override {
     return true;
   }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsOverridesOSSExperimental.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<25f75edcfc62e5ce24c2d1bd10244e40>>
+ * @generated SignedSource<<ddf338308d0390152ddbec172c0ad40e>>
  */
 
 /**
@@ -105,6 +105,8 @@ class ReactNativeFeatureFlagsOverridesOSSExperimental : public ReactNativeFeatur
 
 
 
+
+
 
 
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsProvider.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<abf61ee3c9ef2363a04899dda2920fdc>>
+ * @generated SignedSource<<0845c9b1618ac1e18ce4aeb5d03a70f5>>
  */
 
 /**
@@ -26,6 +26,7 @@ class ReactNativeFeatureFlagsProvider {
   virtual ~ReactNativeFeatureFlagsProvider() = default;
 
   virtual bool commonTestFlag() = 0;
+  virtual bool animatedShouldSignalBatch() = 0;
   virtual bool disableMountItemReorderingAndroid() = 0;
   virtual bool enableAccumulatedUpdatesInRawPropsAndroid() = 0;
   virtual bool enableBridgelessArchitecture() = 0;

packages/react-native/ReactCommon/react/nativemodule/featureflags/NativeReactNativeFeatureFlags.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<2e88c46eee92923e11e44bc63a297f91>>
+ * @generated SignedSource<<7493403280d2ac7ec348eb3d78d915c2>>
  */
 
 /**
@@ -49,6 +49,11 @@ bool NativeReactNativeFeatureFlags::commonTestFlagWithoutNativeImplementation(
   return false;
 }
 
+bool NativeReactNativeFeatureFlags::animatedShouldSignalBatch(
+    jsi::Runtime& /*runtime*/) {
+  return ReactNativeFeatureFlags::animatedShouldSignalBatch();
+}
+
 bool NativeReactNativeFeatureFlags::disableMountItemReorderingAndroid(
     jsi::Runtime& /*runtime*/) {
   return ReactNativeFeatureFlags::disableMountItemReorderingAndroid();

packages/react-native/ReactCommon/react/nativemodule/featureflags/NativeReactNativeFeatureFlags.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<976dc1d9e9df5d843d796ba71fab2e27>>
+ * @generated SignedSource<<36b55f5cfd86d9aaad26c760dec7c875>>
  */
 
 /**
@@ -39,6 +39,8 @@ class NativeReactNativeFeatureFlags
 
   bool commonTestFlagWithoutNativeImplementation(jsi::Runtime& runtime);
 
+  bool animatedShouldSignalBatch(jsi::Runtime& runtime);
+
   bool disableMountItemReorderingAndroid(jsi::Runtime& runtime);
 
   bool enableAccumulatedUpdatesInRawPropsAndroid(jsi::Runtime& runtime);

packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js

@@ -60,6 +60,16 @@ const testDefinitions: FeatureFlagDefinitions = {
 const definitions: FeatureFlagDefinitions = {
   common: {
     ...testDefinitions.common,
+    animatedShouldSignalBatch: {
+      defaultValue: false,
+      metadata: {
+        dateAdded: '2025-03-07',
+        description: 'Enables start- and finishOperationBatch on any platform.',
+        expectedReleaseValue: true,
+        purpose: 'experimentation',
+      },
+      ossReleaseStage: 'none',
+    },
     disableMountItemReorderingAndroid: {
       defaultValue: false,
       metadata: {

packages/react-native/src/private/animated/NativeAnimatedHelper.js

@@ -57,6 +57,8 @@ const eventListenerAnimationFinishedCallbacks: {
 let globalEventEmitterGetValueListener: ?EventSubscription = null;
 let globalEventEmitterAnimationFinishedListener: ?EventSubscription = null;
 
+const shouldSignalBatch = ReactNativeFeatureFlags.animatedShouldSignalBatch();
+
 function createNativeOperations(): $NonMaybeType<typeof NativeAnimatedModule> {
   const methodNames = [
     'createAnimatedNode', // 1
@@ -106,6 +108,11 @@ function createNativeOperations(): $NonMaybeType<typeof NativeAnimatedModule> {
         if (queueOperations || queue.length !== 0) {
           // $FlowExpectedError[incompatible-call] - Dynamism.
           queue.push(() => method(...args));
+        } else if (shouldSignalBatch) {
+          // $FlowExpectedError[incompatible-call] - Dynamism.
+          queue.push(() => method(...args));
+          clearImmediate(flushQueueImmediate);
+          flushQueueImmediate = setImmediate(API.flushQueue);
         } else {
           // $FlowExpectedError[incompatible-call] - Dynamism.
           method(...args);
@@ -138,6 +145,10 @@ const API = {
       }) as $NonMaybeType<typeof NativeAnimatedModule>['getValue'],
 
   setWaitingForIdentifier(id: string): void {
+    if (shouldSignalBatch) {
+      return;
+    }
+
     waitingForQueuedOperations.add(id);
     queueOperations = true;
     if (
@@ -149,6 +160,10 @@ const API = {
   },
 
   unsetWaitingForIdentifier(id: string): void {
+    if (shouldSignalBatch) {
+      return;
+    }
+
     waitingForQueuedOperations.delete(id);
 
     if (waitingForQueuedOperations.size === 0) {
@@ -202,7 +217,7 @@ const API = {
           return;
         }
 
-        if (Platform.OS === 'android') {
+        if (Platform.OS === 'android' || shouldSignalBatch) {
           NativeAnimatedModule?.startOperationBatch?.();
         }
 
@@ -211,7 +226,7 @@ const API = {
         }
         queue.length = 0;
 
-        if (Platform.OS === 'android') {
+        if (Platform.OS === 'android' || shouldSignalBatch) {
           NativeAnimatedModule?.finishOperationBatch?.();
         }
       }) as () => void,

packages/react-native/src/private/featureflags/ReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<4f1befe0cec24eeb531d7ecca6bc451b>>
+ * @generated SignedSource<<99bbe1c87a7620b6381705db9795fd77>>
  * @flow strict
  */
 
@@ -49,6 +49,7 @@ export type ReactNativeFeatureFlags = $ReadOnly<{
   ...ReactNativeFeatureFlagsJsOnly,
   commonTestFlag: Getter<boolean>,
   commonTestFlagWithoutNativeImplementation: Getter<boolean>,
+  animatedShouldSignalBatch: Getter<boolean>,
   disableMountItemReorderingAndroid: Getter<boolean>,
   enableAccumulatedUpdatesInRawPropsAndroid: Getter<boolean>,
   enableBridgelessArchitecture: Getter<boolean>,
@@ -169,6 +170,10 @@ export const commonTestFlag: Getter<boolean> = createNativeFlagGetter('commonTes
  * Common flag for testing (without native implementation). Do NOT modify.
  */
 export const commonTestFlagWithoutNativeImplementation: Getter<boolean> = createNativeFlagGetter('commonTestFlagWithoutNativeImplementation', false);
+/**
+ * Enables start- and finishOperationBatch on any platform.
+ */
+export const animatedShouldSignalBatch: Getter<boolean> = createNativeFlagGetter('animatedShouldSignalBatch', false);
 /**
  * Prevent FabricMountingManager from reordering mountitems, which may lead to invalid state on the UI thread
  */

packages/react-native/src/private/featureflags/specs/NativeReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<f8e0c44bed98b686fd2964aae598ad67>>
+ * @generated SignedSource<<22d8e7623a2eee5182c786f2ec914401>>
  * @flow strict
  */
 
@@ -25,6 +25,7 @@ import * as TurboModuleRegistry from '../../../../Libraries/TurboModule/TurboMod
 export interface Spec extends TurboModule {
   +commonTestFlag?: () => boolean;
   +commonTestFlagWithoutNativeImplementation?: () => boolean;
+  +animatedShouldSignalBatch?: () => boolean;
   +disableMountItemReorderingAndroid?: () => boolean;
   +enableAccumulatedUpdatesInRawPropsAndroid?: () => boolean;
   +enableBridgelessArchitecture?: () => boolean;